update: parser now uses tokens from lexer

fixes pending:
 - some functions are longer than norminette allows
 - find solution to a list of commands being returned, even though a
syntax error is found when processing tokens (maybe delegate some work
to the lexer and return only a syntax-valid list?)

include/minishell.h

@@ -6,7 +6,7 @@
 /*   By: sede-san <sede-san@student.42madrid.com    +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2025/10/20 16:35:10 by sede-san          #+#    #+#             */
-/*   Updated: 2026/02/09 18:38:16 by sede-san         ###   ########.fr       */
+/*   Updated: 2026/02/10 22:12:58 by sede-san         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -18,6 +18,7 @@
 # include "chardefs.h"
 # include <stdbool.h>
 # include <stdint.h>
+# include <errno.h>
 # include <readline/readline.h>	// readline(3), rl_clear_history(),
 								// rl_on_new_line(), rl_replace_line(),
 								// rl_redisplay()